security advisorybug fixlow severity
Low: pam_krb5 security and bug fix update. Date: Tue, 27 Apr 2010 10:56:40 -0500 Reply-To: Troy Dawson Sender: Security Errata for Scientific Linux From: Troy Dawson Subject: Security ERRATA Low: pam_krb5 on SL5.x i386/x86_64 Comments: To: "This email address is being protected from spambots. You need JavaScript enabled to view it." Synopsis: Low: pam_krb5 security and bug fix update Issue date: 2010-03-30 CVE Names: CVE-2009-1384 A flaw was found in pam_krb5. In some non-default configurations (specifically, those where pam_krb5 would be the first module to prompt for a password), the text of the password prompt varied based on whether or not the username provided was a username known to the system. A remote attacker could use this flaw to recognize valid usernames, which would aid a dictionary-based password guess attack. (CVE-2009-1384) This update also fixes the following bugs: * certain applications which do not properly implement PAM conversations may fail to authenticate users whose passwords have expired and must be changed, or may succeed without forcing the user's password to be changed. This bug is triggered by a previously-applied fix to pam_krb5 which makes it comply more closely to PAM specifications. If an application misbehaves, enabling the "chpw_prompt" option for its service should restore the old behavior. (BZ#509092) * pam_krb5 does not allow the user to change an expired password in cases where the Key Distribution Center (KDC) is configured to refuse attempts to obtain forwardable password-changing credentials. This update fixes this issue. (BZ#489015) * failure to verify TGT because of wrong keytab handling. (BZ#450776) SL 5.x SRPMS: pam_krb5-2.2.14-15.src.rpm i386: pam_krb5-2.2.14-15.i386.rpm x86_64: pam_krb5-2.2.14-15.i386.rpm pam_krb5-2.2.14-15.x86_64.rpm -Connie Sieh -Troy Dawson . A critical patch for pam_krb5 resolves vulnerabilities and glitches, safeguarding against prospective threats on Scientific Linux systems.. pam_krb5, Scientific Linux, security advisory, bug fix, low severity. . Severity: Low.LinuxSecurity.com Team
Apr 27, 2010
•Low
Scientific Linux